Stadium: Court 5 Round: 62 Ground: Clay
| ITF Germany F8 Qual | 2018/07/15 10:00 | Felix Andre v Karlo Cubelic | 2-6,1-6 |
| ITF Netherlands F3 | 2018/07/08 09:30 | Arklon H D Pino v Karlo Cubelic | 6-1,7-5 |
| ITF Netherlands F3 | 2018/07/07 12:15 | Karlo Cubelic v Daniel Grunberger | 3-6,6-3,6-3 |
| ITF Netherlands F3 | 2018/07/07 07:30 | Karlo Cubelic v Tom Clavel | 6-4,6-2 |
| ITF Germany F5 | 2018/06/25 08:00 | David Chaplefeh Forchap v Karlo Cubelic | 1-6,4-6 |
| ITF Germany F5 | 2018/06/25 08:00 | Gabriel Donev v Karlo Cubelic | 6-2,6-2 |
| ITF Germany F5 | 2018/06/24 15:00 | Karlo Cubelic v Jordi Walder | 7-5,3-6,6-2 |
| ITF Germany F4 | 2018/06/18 11:00 | Roy Sarut De Valk v Karlo Cubelic | 6-1,6-1 |
| ITF Germany F8 Qual | 2018/07/15 10:00 | James Allemby v Marcus Mansson | 4-6,5-7 |
| ITF Spain F15 Qual | 2018/06/10 07:00 | Marcus Mansson v Ignacio B Alia | 4-6,4-6 |
| ITF Sweden F3 Qual | 2018/05/20 11:25 | Marcus Mansson v Jakob Arvidsson Ehn | 7-5,7-6 |
| ITF Sweden F3 Qual | 2018/05/19 12:55 | Marcus Mansson v Jesper Klov Nilsson | 6-3,6-3 |
| ITF Sweden F2 Qual | 2018/05/12 08:00 | Marcus Mansson v Almir Nokic | 3-6,6-2,1-6 |
| ITF Sweden F1 | 2018/05/08 12:05 | Marcus Mansson v Patrik Brydolf | 4-6,4-6 |
| ITF France F6 Qual | 2018/03/17 08:30 | Marcus Mansson v Steven Broge | 6-1,2-6,6-2 |
| ITF France F5 Qual | 2018/03/11 10:40 | Pierre Delage v Marcus Mansson | 6-4,5-7,7-6 |